large register file, digital circuit optimization
Name LargeRegFile
Group Stevenson
Matrix ID 2273
Num Rows 2,111,154
Num Cols 801,374
Nonzeros 4,944,201
Pattern Entries 4,944,201
Kind Circuit Simulation Problem
Symmetric No
Date 2010
Author J. Stevenson
Editor T. Davis
Structural Rank 801,374
Structural Rank Full true
Num Dmperm Blocks 32,778
Strongly Connect Components 2
Num Explicit Zeros 0
Pattern Symmetry 0%
Numeric Symmetry 0%
Cholesky Candidate no
Positive Definite no
Type real
Download MATLAB Rutherford Boeing Matrix Market
Circuit optimization for digital circuits.  John Peter Stevenson, Stanford.
LargeRegFile is a matrix representing an optimization problem.             
Specifically, it is a geometric program, a kind of convex optimization     
problem.  The matrix entries are the exponents found in the geometric      
program constraints; specifically, this matrix is a portion of the         
input required by mskexpopt:                                                                      
This matrix represents a digital circuit.  The circuit is a large          
register file: 256 registers, 64 bits each, 2 read ports, 1 write port.    
The optimization problem is to minimize circuit delay, subject to          
constraints on energy cost and area cost. The optimization variables       
are the transistor size, the supply voltage, and the threshold voltage.    
The circuit optimization method is described by Patil, et. al.: Robust     
energy-efficient adder topologies. In ARITH07: Proceedings of the 18th     
IEEE Symposium on Computer Arithmetic, pages 16-28, Washington, DC,        
USA, 2007. IEEE Computer Society.